'Lawbreaker' in the Bible

Circumcision does indeed profit, if you obey the Law; but if you are a Law-breaker, the fact that you have been circumcised counts for nothing.

although he is a Gentile by birth, if he scrupulously obeys the Law, shall he not sit in judgement upon you who, possessing, as you do, a written Law and circumcision, are yet a Law-breaker?